3VZB

Crystal structure of Sphingosine Kinase 1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.213 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Molecular Basis of Sphingosine Kinase 1 Substrate Recognition and Catalysis.

Wang, Z.Min, X.Xiao, S.H.Johnstone, S.Romanow, W.Meininger, D.Xu, H.Liu, J.Dai, J.An, S.Thibault, S.Walker, N.

(2013) Structure --: --

  • DOI: 10.1016/j.str.2013.02.025
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Sphingosine kinase 1 (SphK1) is a lipid kinase that catalyzes the conversion of sphingosine to sphingosine-1-phosphate (S1P), which has been shown to play a role in lymphocyte trafficking, angiogenesis, and response to apoptotic stimuli. As a central ...

    Sphingosine kinase 1 (SphK1) is a lipid kinase that catalyzes the conversion of sphingosine to sphingosine-1-phosphate (S1P), which has been shown to play a role in lymphocyte trafficking, angiogenesis, and response to apoptotic stimuli. As a central enzyme in modulating the S1P levels in cells, SphK1 emerges as an important regulator for diverse cellular functions and a potential target for drug discovery. Here, we present the crystal structures of human SphK1 in the apo form and in complexes with a substrate sphingosine-like lipid, ADP, and an inhibitor at 2.0-2.3 Å resolution. The SphK1 structures reveal a two-domain architecture in which its catalytic site is located in the cleft between the two domains and a hydrophobic lipid-binding pocket is buried in the C-terminal domain. Comparative analysis of these structures with mutagenesis and kinetic studies provides insight into how SphK1 recognizes the lipid substrate and catalyzes ATP-dependent phosphorylation.


    Organizational Affiliation

    Department of Molecular Structure and Characterization, Amgen, Inc., 1120 Veterans Boulevard, South San Francisco, CA 94080, USA. zwang@amgen.com




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Sphingosine kinase 1
A, B, C
360Homo sapiensMutation(s): 0 
Gene Names: SPHK1 (SK1, SPHK, SPK)
EC: 2.7.1.91
Find proteins for Q9NYA1 (Homo sapiens)
Go to Gene View: SPHK1
Go to UniProtKB:  Q9NYA1
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B, C
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
SQS
Query on SQS

Download SDF File 
Download CCD File 
A, B
(2S,3R,4E)-2-aminooctadec-4-ene-1,3-diol
D-Sphingosine
C18 H37 N O2
WWUZIQQURGPMPG-KRWOKUGFSA-N
 Ligand Interaction
EDO
Query on EDO

Download SDF File 
Download CCD File 
A, B, C
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.213 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 101.859α = 90.00
b = 226.263β = 90.00
c = 106.487γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
REFMACrefinement
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-05-08
    Type: Initial release